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support/docker/Dockerfile: unbreak 32bit support for x86-64

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Fixes ttps://gitlab.com/buildroot.org/buildroot/-/jobs/9153298207

Commit 3bc94471ca ("support/docker: prepare for Aarch64 Docker images")
reworked the Dockerfile to only add the 32bit support when building for
x86-64, but it forgot to add a TARGETPLATFORM argument so the conditionals
never triggers.

Fix it by adding a TARGETPLATFORM argument as explained here:
https://forums.docker.com/t/build-multi-arch-images-with-different-commands-per-architecture-in-docker-file/134795

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Peter Korsgaard
2025-02-19 15:46:36 +01:00
parent 002931cc3a
commit ea30149c13
1 changed files with 3 additions and 0 deletions
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support/docker/Dockerfile
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@@ -14,6 +14,9 @@ LABEL maintainer="Buildroot mailing list <buildroot@buildroot.org>" \
vendor="Buildroot" \
description="Container with everything needed to run Buildroot"
# Architecture to build for
ARG TARGETPLATFORM
# We need tar >= 1.35
ARG TAR_VERSION="1.35"